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1#ifndef _NET_FLOW_OFFLOAD_H
2#define _NET_FLOW_OFFLOAD_H
3
4#include <linux/kernel.h>
5#include <linux/list.h>
6#include <linux/netlink.h>
7#include <net/flow_dissector.h>
8
9struct flow_match {
10 struct flow_dissector *dissector;
11 void *mask;
12 void *key;
13};
14
15struct flow_match_meta {
16 struct flow_dissector_key_meta *key, *mask;
17};
18
19struct flow_match_basic {
20 struct flow_dissector_key_basic *key, *mask;
21};
22
23struct flow_match_control {
24 struct flow_dissector_key_control *key, *mask;
25};
26
27struct flow_match_eth_addrs {
28 struct flow_dissector_key_eth_addrs *key, *mask;
29};
30
31struct flow_match_vlan {
32 struct flow_dissector_key_vlan *key, *mask;
33};
34
35struct flow_match_arp {
36 struct flow_dissector_key_arp *key, *mask;
37};
38
39struct flow_match_ipv4_addrs {
40 struct flow_dissector_key_ipv4_addrs *key, *mask;
41};
42
43struct flow_match_ipv6_addrs {
44 struct flow_dissector_key_ipv6_addrs *key, *mask;
45};
46
47struct flow_match_ip {
48 struct flow_dissector_key_ip *key, *mask;
49};
50
51struct flow_match_ports {
52 struct flow_dissector_key_ports *key, *mask;
53};
54
55struct flow_match_ports_range {
56 struct flow_dissector_key_ports_range *key, *mask;
57};
58
59struct flow_match_icmp {
60 struct flow_dissector_key_icmp *key, *mask;
61};
62
63struct flow_match_tcp {
64 struct flow_dissector_key_tcp *key, *mask;
65};
66
67struct flow_match_ipsec {
68 struct flow_dissector_key_ipsec *key, *mask;
69};
70
71struct flow_match_mpls {
72 struct flow_dissector_key_mpls *key, *mask;
73};
74
75struct flow_match_enc_keyid {
76 struct flow_dissector_key_keyid *key, *mask;
77};
78
79struct flow_match_enc_opts {
80 struct flow_dissector_key_enc_opts *key, *mask;
81};
82
83struct flow_match_ct {
84 struct flow_dissector_key_ct *key, *mask;
85};
86
87struct flow_match_pppoe {
88 struct flow_dissector_key_pppoe *key, *mask;
89};
90
91struct flow_match_l2tpv3 {
92 struct flow_dissector_key_l2tpv3 *key, *mask;
93};
94
95struct flow_rule;
96
97void flow_rule_match_meta(const struct flow_rule *rule,
98 struct flow_match_meta *out);
99void flow_rule_match_basic(const struct flow_rule *rule,
100 struct flow_match_basic *out);
101void flow_rule_match_control(const struct flow_rule *rule,
102 struct flow_match_control *out);
103void flow_rule_match_eth_addrs(const struct flow_rule *rule,
104 struct flow_match_eth_addrs *out);
105void flow_rule_match_vlan(const struct flow_rule *rule,
106 struct flow_match_vlan *out);
107void flow_rule_match_cvlan(const struct flow_rule *rule,
108 struct flow_match_vlan *out);
109void flow_rule_match_arp(const struct flow_rule *rule,
110 struct flow_match_arp *out);
111void flow_rule_match_ipv4_addrs(const struct flow_rule *rule,
112 struct flow_match_ipv4_addrs *out);
113void flow_rule_match_ipv6_addrs(const struct flow_rule *rule,
114 struct flow_match_ipv6_addrs *out);
115void flow_rule_match_ip(const struct flow_rule *rule,
116 struct flow_match_ip *out);
117void flow_rule_match_ports(const struct flow_rule *rule,
118 struct flow_match_ports *out);
119void flow_rule_match_ports_range(const struct flow_rule *rule,
120 struct flow_match_ports_range *out);
121void flow_rule_match_tcp(const struct flow_rule *rule,
122 struct flow_match_tcp *out);
123void flow_rule_match_ipsec(const struct flow_rule *rule,
124 struct flow_match_ipsec *out);
125void flow_rule_match_icmp(const struct flow_rule *rule,
126 struct flow_match_icmp *out);
127void flow_rule_match_mpls(const struct flow_rule *rule,
128 struct flow_match_mpls *out);
129void flow_rule_match_enc_control(const struct flow_rule *rule,
130 struct flow_match_control *out);
131void flow_rule_match_enc_ipv4_addrs(const struct flow_rule *rule,
132 struct flow_match_ipv4_addrs *out);
133void flow_rule_match_enc_ipv6_addrs(const struct flow_rule *rule,
134 struct flow_match_ipv6_addrs *out);
135void flow_rule_match_enc_ip(const struct flow_rule *rule,
136 struct flow_match_ip *out);
137void flow_rule_match_enc_ports(const struct flow_rule *rule,
138 struct flow_match_ports *out);
139void flow_rule_match_enc_keyid(const struct flow_rule *rule,
140 struct flow_match_enc_keyid *out);
141void flow_rule_match_enc_opts(const struct flow_rule *rule,
142 struct flow_match_enc_opts *out);
143void flow_rule_match_ct(const struct flow_rule *rule,
144 struct flow_match_ct *out);
145void flow_rule_match_pppoe(const struct flow_rule *rule,
146 struct flow_match_pppoe *out);
147void flow_rule_match_l2tpv3(const struct flow_rule *rule,
148 struct flow_match_l2tpv3 *out);
149
150enum flow_action_id {
151 FLOW_ACTION_ACCEPT = 0,
152 FLOW_ACTION_DROP,
153 FLOW_ACTION_TRAP,
154 FLOW_ACTION_GOTO,
155 FLOW_ACTION_REDIRECT,
156 FLOW_ACTION_MIRRED,
157 FLOW_ACTION_REDIRECT_INGRESS,
158 FLOW_ACTION_MIRRED_INGRESS,
159 FLOW_ACTION_VLAN_PUSH,
160 FLOW_ACTION_VLAN_POP,
161 FLOW_ACTION_VLAN_MANGLE,
162 FLOW_ACTION_TUNNEL_ENCAP,
163 FLOW_ACTION_TUNNEL_DECAP,
164 FLOW_ACTION_MANGLE,
165 FLOW_ACTION_ADD,
166 FLOW_ACTION_CSUM,
167 FLOW_ACTION_MARK,
168 FLOW_ACTION_PTYPE,
169 FLOW_ACTION_PRIORITY,
170 FLOW_ACTION_RX_QUEUE_MAPPING,
171 FLOW_ACTION_WAKE,
172 FLOW_ACTION_QUEUE,
173 FLOW_ACTION_SAMPLE,
174 FLOW_ACTION_POLICE,
175 FLOW_ACTION_CT,
176 FLOW_ACTION_CT_METADATA,
177 FLOW_ACTION_MPLS_PUSH,
178 FLOW_ACTION_MPLS_POP,
179 FLOW_ACTION_MPLS_MANGLE,
180 FLOW_ACTION_GATE,
181 FLOW_ACTION_PPPOE_PUSH,
182 FLOW_ACTION_JUMP,
183 FLOW_ACTION_PIPE,
184 FLOW_ACTION_VLAN_PUSH_ETH,
185 FLOW_ACTION_VLAN_POP_ETH,
186 FLOW_ACTION_CONTINUE,
187 NUM_FLOW_ACTIONS,
188};
189
190/* This is mirroring enum pedit_header_type definition for easy mapping between
191 * tc pedit action. Legacy TCA_PEDIT_KEY_EX_HDR_TYPE_NETWORK is mapped to
192 * FLOW_ACT_MANGLE_UNSPEC, which is supported by no driver.
193 */
194enum flow_action_mangle_base {
195 FLOW_ACT_MANGLE_UNSPEC = 0,
196 FLOW_ACT_MANGLE_HDR_TYPE_ETH,
197 FLOW_ACT_MANGLE_HDR_TYPE_IP4,
198 FLOW_ACT_MANGLE_HDR_TYPE_IP6,
199 FLOW_ACT_MANGLE_HDR_TYPE_TCP,
200 FLOW_ACT_MANGLE_HDR_TYPE_UDP,
201};
202
203enum flow_action_hw_stats_bit {
204 FLOW_ACTION_HW_STATS_IMMEDIATE_BIT,
205 FLOW_ACTION_HW_STATS_DELAYED_BIT,
206 FLOW_ACTION_HW_STATS_DISABLED_BIT,
207
208 FLOW_ACTION_HW_STATS_NUM_BITS
209};
210
211enum flow_action_hw_stats {
212 FLOW_ACTION_HW_STATS_IMMEDIATE =
213 BIT(FLOW_ACTION_HW_STATS_IMMEDIATE_BIT),
214 FLOW_ACTION_HW_STATS_DELAYED = BIT(FLOW_ACTION_HW_STATS_DELAYED_BIT),
215 FLOW_ACTION_HW_STATS_ANY = FLOW_ACTION_HW_STATS_IMMEDIATE |
216 FLOW_ACTION_HW_STATS_DELAYED,
217 FLOW_ACTION_HW_STATS_DISABLED =
218 BIT(FLOW_ACTION_HW_STATS_DISABLED_BIT),
219 FLOW_ACTION_HW_STATS_DONT_CARE = BIT(FLOW_ACTION_HW_STATS_NUM_BITS) - 1,
220};
221
222typedef void (*action_destr)(void *priv);
223
224struct flow_action_cookie {
225 u32 cookie_len;
226 u8 cookie[];
227};
228
229struct flow_action_cookie *flow_action_cookie_create(void *data,
230 unsigned int len,
231 gfp_t gfp);
232void flow_action_cookie_destroy(struct flow_action_cookie *cookie);
233
234struct flow_action_police {
235 u32 burst;
236 u64 rate_bytes_ps;
237 u64 peakrate_bytes_ps;
238 u32 avrate;
239 u16 overhead;
240 u64 burst_pkt;
241 u64 rate_pkt_ps;
242 u32 mtu;
243 struct {
244 enum flow_action_id act_id;
245 u32 extval;
246 } exceed, notexceed;
247};
248
249struct flow_action_entry {
250 enum flow_action_id id;
251 u32 hw_index;
252 unsigned long cookie;
253 u64 miss_cookie;
254 enum flow_action_hw_stats hw_stats;
255 action_destr destructor;
256 void *destructor_priv;
257 union {
258 u32 chain_index; /* FLOW_ACTION_GOTO */
259 struct net_device *dev; /* FLOW_ACTION_REDIRECT */
260 struct { /* FLOW_ACTION_VLAN */
261 u16 vid;
262 __be16 proto;
263 u8 prio;
264 } vlan;
265 struct { /* FLOW_ACTION_VLAN_PUSH_ETH */
266 unsigned char dst[ETH_ALEN];
267 unsigned char src[ETH_ALEN];
268 } vlan_push_eth;
269 struct { /* FLOW_ACTION_MANGLE */
270 /* FLOW_ACTION_ADD */
271 enum flow_action_mangle_base htype;
272 u32 offset;
273 u32 mask;
274 u32 val;
275 } mangle;
276 struct ip_tunnel_info *tunnel; /* FLOW_ACTION_TUNNEL_ENCAP */
277 u32 csum_flags; /* FLOW_ACTION_CSUM */
278 u32 mark; /* FLOW_ACTION_MARK */
279 u16 ptype; /* FLOW_ACTION_PTYPE */
280 u16 rx_queue; /* FLOW_ACTION_RX_QUEUE_MAPPING */
281 u32 priority; /* FLOW_ACTION_PRIORITY */
282 struct { /* FLOW_ACTION_QUEUE */
283 u32 ctx;
284 u32 index;
285 u8 vf;
286 } queue;
287 struct { /* FLOW_ACTION_SAMPLE */
288 struct psample_group *psample_group;
289 u32 rate;
290 u32 trunc_size;
291 bool truncate;
292 } sample;
293 struct flow_action_police police; /* FLOW_ACTION_POLICE */
294 struct { /* FLOW_ACTION_CT */
295 int action;
296 u16 zone;
297 struct nf_flowtable *flow_table;
298 } ct;
299 struct {
300 unsigned long cookie;
301 u32 mark;
302 u32 labels[4];
303 bool orig_dir;
304 } ct_metadata;
305 struct { /* FLOW_ACTION_MPLS_PUSH */
306 u32 label;
307 __be16 proto;
308 u8 tc;
309 u8 bos;
310 u8 ttl;
311 } mpls_push;
312 struct { /* FLOW_ACTION_MPLS_POP */
313 __be16 proto;
314 } mpls_pop;
315 struct { /* FLOW_ACTION_MPLS_MANGLE */
316 u32 label;
317 u8 tc;
318 u8 bos;
319 u8 ttl;
320 } mpls_mangle;
321 struct {
322 s32 prio;
323 u64 basetime;
324 u64 cycletime;
325 u64 cycletimeext;
326 u32 num_entries;
327 struct action_gate_entry *entries;
328 } gate;
329 struct { /* FLOW_ACTION_PPPOE_PUSH */
330 u16 sid;
331 } pppoe;
332 };
333 struct flow_action_cookie *user_cookie; /* user defined action cookie */
334};
335
336struct flow_action {
337 unsigned int num_entries;
338 struct flow_action_entry entries[] __counted_by(num_entries);
339};
340
341static inline bool flow_action_has_entries(const struct flow_action *action)
342{
343 return action->num_entries;
344}
345
346/**
347 * flow_offload_has_one_action() - check if exactly one action is present
348 * @action: tc filter flow offload action
349 *
350 * Return: true if exactly one action is present.
351 */
352static inline bool flow_offload_has_one_action(const struct flow_action *action)
353{
354 return action->num_entries == 1;
355}
356
357static inline bool flow_action_is_last_entry(const struct flow_action *action,
358 const struct flow_action_entry *entry)
359{
360 return entry == &action->entries[action->num_entries - 1];
361}
362
363#define flow_action_for_each(__i, __act, __actions) \
364 for (__i = 0, __act = &(__actions)->entries[0]; \
365 __i < (__actions)->num_entries; \
366 __act = &(__actions)->entries[++__i])
367
368static inline bool
369flow_action_mixed_hw_stats_check(const struct flow_action *action,
370 struct netlink_ext_ack *extack)
371{
372 const struct flow_action_entry *action_entry;
373 u8 last_hw_stats;
374 int i;
375
376 if (flow_offload_has_one_action(action))
377 return true;
378
379 flow_action_for_each(i, action_entry, action) {
380 if (i && action_entry->hw_stats != last_hw_stats) {
381 NL_SET_ERR_MSG_MOD(extack, "Mixing HW stats types for actions is not supported");
382 return false;
383 }
384 last_hw_stats = action_entry->hw_stats;
385 }
386 return true;
387}
388
389static inline const struct flow_action_entry *
390flow_action_first_entry_get(const struct flow_action *action)
391{
392 WARN_ON(!flow_action_has_entries(action));
393 return &action->entries[0];
394}
395
396static inline bool
397__flow_action_hw_stats_check(const struct flow_action *action,
398 struct netlink_ext_ack *extack,
399 bool check_allow_bit,
400 enum flow_action_hw_stats_bit allow_bit)
401{
402 const struct flow_action_entry *action_entry;
403
404 if (!flow_action_has_entries(action))
405 return true;
406 if (!flow_action_mixed_hw_stats_check(action, extack))
407 return false;
408
409 action_entry = flow_action_first_entry_get(action);
410
411 /* Zero is not a legal value for hw_stats, catch anyone passing it */
412 WARN_ON_ONCE(!action_entry->hw_stats);
413
414 if (!check_allow_bit &&
415 ~action_entry->hw_stats & FLOW_ACTION_HW_STATS_ANY) {
416 NL_SET_ERR_MSG_MOD(extack, "Driver supports only default HW stats type \"any\"");
417 return false;
418 } else if (check_allow_bit &&
419 !(action_entry->hw_stats & BIT(allow_bit))) {
420 NL_SET_ERR_MSG_MOD(extack, "Driver does not support selected HW stats type");
421 return false;
422 }
423 return true;
424}
425
426static inline bool
427flow_action_hw_stats_check(const struct flow_action *action,
428 struct netlink_ext_ack *extack,
429 enum flow_action_hw_stats_bit allow_bit)
430{
431 return __flow_action_hw_stats_check(action, extack, true, allow_bit);
432}
433
434static inline bool
435flow_action_basic_hw_stats_check(const struct flow_action *action,
436 struct netlink_ext_ack *extack)
437{
438 return __flow_action_hw_stats_check(action, extack, false, 0);
439}
440
441struct flow_rule {
442 struct flow_match match;
443 struct flow_action action;
444};
445
446struct flow_rule *flow_rule_alloc(unsigned int num_actions);
447
448static inline bool flow_rule_match_key(const struct flow_rule *rule,
449 enum flow_dissector_key_id key)
450{
451 return dissector_uses_key(rule->match.dissector, key);
452}
453
454/**
455 * flow_rule_is_supp_control_flags() - check for supported control flags
456 * @supp_flags: control flags supported by driver
457 * @ctrl_flags: control flags present in rule
458 * @extack: The netlink extended ACK for reporting errors.
459 *
460 * Return: true if only supported control flags are set, false otherwise.
461 */
462static inline bool flow_rule_is_supp_control_flags(const u32 supp_flags,
463 const u32 ctrl_flags,
464 struct netlink_ext_ack *extack)
465{
466 if (likely((ctrl_flags & ~supp_flags) == 0))
467 return true;
468
469 NL_SET_ERR_MSG_FMT_MOD(extack,
470 "Unsupported match on control.flags %#x",
471 ctrl_flags);
472
473 return false;
474}
475
476/**
477 * flow_rule_is_supp_enc_control_flags() - check for supported control flags
478 * @supp_enc_flags: encapsulation control flags supported by driver
479 * @enc_ctrl_flags: encapsulation control flags present in rule
480 * @extack: The netlink extended ACK for reporting errors.
481 *
482 * Return: true if only supported control flags are set, false otherwise.
483 */
484static inline bool flow_rule_is_supp_enc_control_flags(const u32 supp_enc_flags,
485 const u32 enc_ctrl_flags,
486 struct netlink_ext_ack *extack)
487{
488 if (likely((enc_ctrl_flags & ~supp_enc_flags) == 0))
489 return true;
490
491 NL_SET_ERR_MSG_FMT_MOD(extack,
492 "Unsupported match on enc_control.flags %#x",
493 enc_ctrl_flags);
494
495 return false;
496}
497
498/**
499 * flow_rule_has_control_flags() - check for presence of any control flags
500 * @ctrl_flags: control flags present in rule
501 * @extack: The netlink extended ACK for reporting errors.
502 *
503 * Return: true if control flags are set, false otherwise.
504 */
505static inline bool flow_rule_has_control_flags(const u32 ctrl_flags,
506 struct netlink_ext_ack *extack)
507{
508 return !flow_rule_is_supp_control_flags(0, ctrl_flags, extack);
509}
510
511/**
512 * flow_rule_has_enc_control_flags() - check for presence of any control flags
513 * @enc_ctrl_flags: encapsulation control flags present in rule
514 * @extack: The netlink extended ACK for reporting errors.
515 *
516 * Return: true if control flags are set, false otherwise.
517 */
518static inline bool flow_rule_has_enc_control_flags(const u32 enc_ctrl_flags,
519 struct netlink_ext_ack *extack)
520{
521 return !flow_rule_is_supp_enc_control_flags(0, enc_ctrl_flags, extack);
522}
523
524/**
525 * flow_rule_match_has_control_flags() - match and check for any control flags
526 * @rule: The flow_rule under evaluation.
527 * @extack: The netlink extended ACK for reporting errors.
528 *
529 * Return: true if control flags are set, false otherwise.
530 */
531static inline bool flow_rule_match_has_control_flags(const struct flow_rule *rule,
532 struct netlink_ext_ack *extack)
533{
534 struct flow_match_control match;
535
536 if (!flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_CONTROL))
537 return false;
538
539 flow_rule_match_control(rule, &match);
540
541 return flow_rule_has_control_flags(match.mask->flags, extack);
542}
543
544struct flow_stats {
545 u64 pkts;
546 u64 bytes;
547 u64 drops;
548 u64 lastused;
549 enum flow_action_hw_stats used_hw_stats;
550 bool used_hw_stats_valid;
551};
552
553static inline void flow_stats_update(struct flow_stats *flow_stats,
554 u64 bytes, u64 pkts,
555 u64 drops, u64 lastused,
556 enum flow_action_hw_stats used_hw_stats)
557{
558 flow_stats->pkts += pkts;
559 flow_stats->bytes += bytes;
560 flow_stats->drops += drops;
561 flow_stats->lastused = max_t(u64, flow_stats->lastused, lastused);
562
563 /* The driver should pass value with a maximum of one bit set.
564 * Passing FLOW_ACTION_HW_STATS_ANY is invalid.
565 */
566 WARN_ON(used_hw_stats == FLOW_ACTION_HW_STATS_ANY);
567 flow_stats->used_hw_stats |= used_hw_stats;
568 flow_stats->used_hw_stats_valid = true;
569}
570
571enum flow_block_command {
572 FLOW_BLOCK_BIND,
573 FLOW_BLOCK_UNBIND,
574};
575
576enum flow_block_binder_type {
577 FLOW_BLOCK_BINDER_TYPE_UNSPEC,
578 FLOW_BLOCK_BINDER_TYPE_CLSACT_INGRESS,
579 FLOW_BLOCK_BINDER_TYPE_CLSACT_EGRESS,
580 FLOW_BLOCK_BINDER_TYPE_RED_EARLY_DROP,
581 FLOW_BLOCK_BINDER_TYPE_RED_MARK,
582};
583
584struct flow_block {
585 struct list_head cb_list;
586};
587
588struct netlink_ext_ack;
589
590struct flow_block_offload {
591 enum flow_block_command command;
592 enum flow_block_binder_type binder_type;
593 bool block_shared;
594 bool unlocked_driver_cb;
595 struct net *net;
596 struct flow_block *block;
597 struct list_head cb_list;
598 struct list_head *driver_block_list;
599 struct netlink_ext_ack *extack;
600 struct Qdisc *sch;
601 struct list_head *cb_list_head;
602};
603
604enum tc_setup_type;
605typedef int flow_setup_cb_t(enum tc_setup_type type, void *type_data,
606 void *cb_priv);
607
608struct flow_block_cb;
609
610struct flow_block_indr {
611 struct list_head list;
612 struct net_device *dev;
613 struct Qdisc *sch;
614 enum flow_block_binder_type binder_type;
615 void *data;
616 void *cb_priv;
617 void (*cleanup)(struct flow_block_cb *block_cb);
618};
619
620struct flow_block_cb {
621 struct list_head driver_list;
622 struct list_head list;
623 flow_setup_cb_t *cb;
624 void *cb_ident;
625 void *cb_priv;
626 void (*release)(void *cb_priv);
627 struct flow_block_indr indr;
628 unsigned int refcnt;
629};
630
631struct flow_block_cb *flow_block_cb_alloc(flow_setup_cb_t *cb,
632 void *cb_ident, void *cb_priv,
633 void (*release)(void *cb_priv));
634struct flow_block_cb *flow_indr_block_cb_alloc(flow_setup_cb_t *cb,
635 void *cb_ident, void *cb_priv,
636 void (*release)(void *cb_priv),
637 struct flow_block_offload *bo,
638 struct net_device *dev,
639 struct Qdisc *sch, void *data,
640 void *indr_cb_priv,
641 void (*cleanup)(struct flow_block_cb *block_cb));
642void flow_block_cb_free(struct flow_block_cb *block_cb);
643
644struct flow_block_cb *flow_block_cb_lookup(struct flow_block *block,
645 flow_setup_cb_t *cb, void *cb_ident);
646
647void *flow_block_cb_priv(struct flow_block_cb *block_cb);
648void flow_block_cb_incref(struct flow_block_cb *block_cb);
649unsigned int flow_block_cb_decref(struct flow_block_cb *block_cb);
650
651static inline void flow_block_cb_add(struct flow_block_cb *block_cb,
652 struct flow_block_offload *offload)
653{
654 list_add_tail(&block_cb->list, &offload->cb_list);
655}
656
657static inline void flow_block_cb_remove(struct flow_block_cb *block_cb,
658 struct flow_block_offload *offload)
659{
660 list_move(&block_cb->list, &offload->cb_list);
661}
662
663static inline void flow_indr_block_cb_remove(struct flow_block_cb *block_cb,
664 struct flow_block_offload *offload)
665{
666 list_del(&block_cb->indr.list);
667 list_move(&block_cb->list, &offload->cb_list);
668}
669
670bool flow_block_cb_is_busy(flow_setup_cb_t *cb, void *cb_ident,
671 struct list_head *driver_block_list);
672
673int flow_block_cb_setup_simple(struct flow_block_offload *f,
674 struct list_head *driver_list,
675 flow_setup_cb_t *cb,
676 void *cb_ident, void *cb_priv, bool ingress_only);
677
678enum flow_cls_command {
679 FLOW_CLS_REPLACE,
680 FLOW_CLS_DESTROY,
681 FLOW_CLS_STATS,
682 FLOW_CLS_TMPLT_CREATE,
683 FLOW_CLS_TMPLT_DESTROY,
684};
685
686struct flow_cls_common_offload {
687 u32 chain_index;
688 __be16 protocol;
689 u32 prio;
690 bool skip_sw;
691 struct netlink_ext_ack *extack;
692};
693
694struct flow_cls_offload {
695 struct flow_cls_common_offload common;
696 enum flow_cls_command command;
697 bool use_act_stats;
698 unsigned long cookie;
699 struct flow_rule *rule;
700 struct flow_stats stats;
701 u32 classid;
702};
703
704enum offload_act_command {
705 FLOW_ACT_REPLACE,
706 FLOW_ACT_DESTROY,
707 FLOW_ACT_STATS,
708};
709
710struct flow_offload_action {
711 struct netlink_ext_ack *extack; /* NULL in FLOW_ACT_STATS process*/
712 enum offload_act_command command;
713 enum flow_action_id id;
714 u32 index;
715 unsigned long cookie;
716 struct flow_stats stats;
717 struct flow_action action;
718};
719
720struct flow_offload_action *offload_action_alloc(unsigned int num_actions);
721
722static inline struct flow_rule *
723flow_cls_offload_flow_rule(const struct flow_cls_offload *flow_cmd)
724{
725 return flow_cmd->rule;
726}
727
728static inline void flow_block_init(struct flow_block *flow_block)
729{
730 INIT_LIST_HEAD(&flow_block->cb_list);
731}
732
733typedef int flow_indr_block_bind_cb_t(struct net_device *dev, struct Qdisc *sch, void *cb_priv,
734 enum tc_setup_type type, void *type_data,
735 void *data,
736 void (*cleanup)(struct flow_block_cb *block_cb));
737
738int flow_indr_dev_register(flow_indr_block_bind_cb_t *cb, void *cb_priv);
739void flow_indr_dev_unregister(flow_indr_block_bind_cb_t *cb, void *cb_priv,
740 void (*release)(void *cb_priv));
741int flow_indr_dev_setup_offload(struct net_device *dev, struct Qdisc *sch,
742 enum tc_setup_type type, void *data,
743 struct flow_block_offload *bo,
744 void (*cleanup)(struct flow_block_cb *block_cb));
745bool flow_indr_dev_exists(void);
746
747#endif /* _NET_FLOW_OFFLOAD_H */